Effect of Integrated weed management practices on growth and yield of sesame (Sesamum indicum L.)
1Radhakrishnan. M., 2P. Anandan, 3A. Sundari and 4J. Raja
1,2,3Department of Agronomy, 4Department of Plant Pathology, Faculty of Agriculture, Annamalai University, Annamalainagar-608 002 (India) E-mail: radharocksr5@gmail.com
ABSTRACT
The Field experiment was conducted at Farmers’ holding at Karimangalam, Dharmapuri district of Tamil Nadu, during summer, 2021 in order to evaluate integrated weed management practices in sesame. The experiment was laid out with seven treatments and three replications. The treatment consist of Control, hand weeding, pre emergence alone, pre emergence f b hand weeding, post emergence alone, pre emergence f b post emergence and weed free check. Among the different treatment tried out, weed free check recorded the lowest weed count on 30 and 45 DAS, weed biomass with highest weed control efficiency, weed control index, the highest Plant height (139.14 cm), leaf area index (4.54), number of capsule plant-1 (71.67), seed yield (1351.9 kg ha-1) and oil content (54.11%). Among the different herbicide treatment tried out, pre emergence application of imazethapyr 0.015 kg ha-1 fb post emergence application of quizalofop ethyl 0.05 kg ha-1 recorded the lowest weed count (8,13), weed biomass (10.89, 21.69 g) highest Weed Control Efficiency (86.21%, 85.39%), Weed Control Index (83.61%, 82.29%) on 30 and 45 DAS, in respect to highest Plant height (122.34 cm), leaf area index (3.99), number of capsule plant-1(57.21), seed yield (100s8.54 kg ha-1) and oil content (52.41%). The unweeded control treatment recorded the highest weed count on 30 and 45 DAS (58,89), weed biomass (66.41, 122.2 g) with lower Weed Control Efficiency and Weed Control Index with lowest Plant height (85.9 cm), leaf area index (3.06), number of capsule plant-1 (21.32), seed yield (687.12 kg ha-1) with oil content (49.29%).